emails thunderbird and general email server questions

[exxos]

I use thunderbird for my emails (have done for about a year, before that outlook express) though the past couple of weeks my emails download fine (using a friends email server)  most of these emails are then sent to another address (atually hosted on same server). My problem is, either thunderbird or the server is "loosing" emails when they are sent.

I just sent 50 emails across between the 2 email accounts on the same server, and they all sent and arrived, though I wonder if its the speed thunderbird is sending the emails out at... For example, the 50 emails i sent, i had to send them manually one at a time so there was about 2 or 3 seconds delay in me sending them, but when TB sends emails, it will just send them as fast as the server can cope with, though with all the connection requests one after the other, do servers in general block that due to spamming or something ?

It does not seem to happen with any amount of emails, I can get 2 emails, and TB sends them both one after the other, and 90% of the time both will arrive once they are forwarded from my pc, but at least once a day, I can get 2 emails, and only 1 arrives after being forwarded.

Having used TB for the past year, I dont think it can just decide to play up like that, though its possible. Though i wonder if any of your guys know if servers would block emails being sent one after the other very fast ? Its hard to work out where the problem is as it seems to be random all the time.

Emails appear in my sent items box, even though sometimes they do not arrive when I forward them, I never miss emails that are downloaded from the server my end, but I assume downloading emails is just one connection request. but sending emails is multiple requests, which im wondering if email servers do not like....

I have setup a email account on IDnet, though before I start changing all my emails over to IDnet, I could do with knowing if IDnet's mail server have any connection request limits per second or something ? At least I can rule that out as being a problem. I'm not sending any amount of emails, only around 10 a day, so can only assume if any servers get more than a couple of connection requests a second they say "no" and it results in emails getting lose somewhere.

TIA,
Chris

[Simon]

Hi Chris,

So, is it not currently IDNet servers you're having issues with?

[exxos]

Hi Simon,

Not using Idnet at the moment no.

I realise this isn't a IDnet issue, was just seeking general info.

Though it is still a valid question if I move my address over to IDnet, I may end up with the same problem.

I assume everyone sets up some form of flood control, I have had that problem in the past at some point with something else.  I'm not even sending any vast amount of emails, I just think there is some limit on my current server that prevents multiple requests per second with the email server. It would be useful to know if IDnet server has anything limited.  Of course there has to be some flood control, but im not sending out 1000's of emails every second kinda thing.  I don't know how you guys setup the email server.  The server may not be the cause of my problems , but if IDnet server only allows 1 connection a second, then my emails won't work as it would hit the flood control limits, which at this point is what I am assuming is happening with my current email host.   

[pctech]

If you are sending mails to a large number of recipients then a mail server may consider it a spamming run.

I think you may need to consider a mass mailing service if you want to do this.

[exxos]

If you are sending mails to a large number of recipients then a mail server may consider it a spamming run.

I think you may need to consider a mass mailing service if you want to do this.

There is only 2 mailboxes involved on 2 separate PCs. I only normally have 10 or so emails to send each day, its nothing.  My point was, some servers only allow a couple of connections per second and simply ignore multiple requests. What I'm saying is, when I come home sunday night, turn my PC on, theres about 7 email accounts being checked pretty much all at once, then the emails which are sent on. As all the requests probably happen one after another, it wouldn't be hard for TB to hit 2 connections per second, even several times. Even though the emails involved are next to nothing, it could still be possible for connection limits per second to be reached.

If I was dealing with 1000's or more emails then it would be a epic of a problem, instead of 1 in 10 going mission i would be loosing 100's in one go.  I can only assume the server I am using now has connection limits set to low.

If IDnet server has a high limit, such as 10+ connections per second then it will no doubt work. I'm not sending 1000's of emails to 1000's of people or anywhere even close to that. What I'm asking is what IDnets limits actually are.

It will take me a few hours work to change email address's and I just don't want to waste all day changing to IDnet email if there is a chance its going to have the same problem.  I can only assume it does not have this problem else the forum would be flooded with complaints about it.

[Glenn]

I think you will only get the answer from support, I haven't seen anything referring to connection limits when sending emails.

[Simon]

Hi Simon,

Not using Idnet at the moment no.

I realise this isn't a IDnet issue, was just seeking general info.

Though it is still a valid question if I move my address over to IDnet, I may end up with the same problem.

I assume everyone sets up some form of flood control, I have had that problem in the past at some point with something else.  I'm not even sending any vast amount of emails, I just think there is some limit on my current server that prevents multiple requests per second with the email server. It would be useful to know if IDnet server has anything limited.  Of course there has to be some flood control, but im not sending out 1000's of emails every second kinda thing.  I don't know how you guys setup the email server.  The server may not be the cause of my problems , but if IDnet server only allows 1 connection a second, then my emails won't work as it would hit the flood control limits, which at this point is what I am assuming is happening with my current email host.   

I think you'd probably need to contact IDNet direct to ask about the mail server setups.  I know they do have flood controls, and mass mailings have taken the servers down on past occasions, but I have no idea of the numbers involved.  I wouldn't have thought 50 emails in one shot would cause issues.  We occasionally send mailshots from the forum, and those exceed 2000 emails.  The forum software sends a few at a time, pausing for a few seconds between each 'shot', but I'd guess it must manage at least 200-250 at a time.